Hair extension device



FIG. 1 is a perspective view of the hair extension device of the present invention showing my new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a back side elevation view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is a another side elevation view thereof;

FIG. 6 is top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM The ornamental design for a hair extension device, as shown and described. 